30031081002 has 96 divisors (see below), whose sum is σ = 73381246848. Its totient is φ = 8806900608.

The previous prime is 30031080977. The next prime is 30031081013. The reversal of 30031081002 is 20018013003.

It is a super-2 number, since 2×30031081002² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1513248 + ... + 1532964.

It is an arithmetic number, because the mean of its divisors is an integer number (764387988).

Almost surely, 2^30031081002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30031081002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36690623424).

30031081002 is an abundant number, since it is smaller than the sum of its proper divisors (43350165846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30031081002 is a wasteful number, since it uses less digits than its factorization.

30031081002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20044 (or 20041 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 30031081002 its reverse (20018013003), we get a palindrome (50049094005).

The spelling of 30031081002 in words is "thirty billion, thirty-one million, eighty-one thousand, two".